Diamonding-tool for grinding-machines.



A. B. LANDIS. DIAMONDING TOOL POR GRINDING MACHINES.

APILIOATION FILED APB.. 19, 1907.

Patented Jan. 4," 1910.

INI/ENTOR.

ATTORNEY l.

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UNITED sTATEs PATENT oEEIoE.

ABRAHAM B. LANDIS. OF WAYNESIBORO, PENNSYLVANIA, ASSIGNOR T LANDIS TOOL COMPANY, A. CORPORATION OF PENNSYLVANIA.

DIAMONDING-TOOL FOR GRINDIN G-MACH-IN ES.

the following is a specification.

My said invention consists in an improved construction and arrangement. of parts of an apparatus for holding and operating the tool for dressing the faces of grinding wheels, such as are used in grinding machines. the device being what is known to the trade as a diamonding tool, whereby such a tool is provided capable of dressing the face of the grinding wheel either parallel with its axis or of any curve desired, all as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts; Figure l is a rear elevation of my improved apparatus for holding and operating the diamonding tool in operative position on the bed of the grinding machine, including a face view of a grinding wheel in position to be operatedupon, Fig. 2 a side elevation of the same, Fig. 3 a sectional View on the dotted line 3 3 in Fig. l, Fig. 4 a detail section on the dotted line 4--4 in Fig. 3, and Figs. 5 and 6 diagrammatic views illustrating the particular character of work for which this diamonding tool is especially adapted to dress the grinding wheel to do and the method of operation.

In said drawings the portions marked A represent the work supporting table of a grinding machine bed, B the stand upon which the diamonding tool is mounted, and C the frame of said diamonding tool. The table A of the grinding machine bed is of the usual or any approved construction and needs no special description.

The stand B is a casting of suitable form secured on the table A by a clamping bolt L the head of which engages with a T-slot in the face of said table and the outer end of which is screw-threaded and provided with a nutb, this being the common method of securing said stands, as well as the headstock and foot-stock to the Work supporting table of a grinding machine. On the upper end of said stand is formed a bearin which extends at right angles across the tab e of the Specification of Letters Patent.

machine, such bearing being split onf: one

side, the two parts being connected b'y-a' clamping screw b2 which extends through an ear b3 on one part and into a screw-threaded perforation in the other part, as shown. See Figs. l and 2, f

The frame Cconsists of a bar vformed (o'r otherwise mounted) on the forward end of a sleeve C, which sleeve is mounted and clamped in the bearing on the upper end of the stand B. Said bar C has a way, pireferably of dove-tailed formation in its front face. A shaft C2 is journaled in said sleeve having a worm gear wheel 'c on its outer end and a pinion c3 at its inner end. A traversing lblock or carriage 'C3 with a dovetail shaped flange on its inner face adapted to lit and run in the way in the outer face of the bar C is mounted in said way and has a pin c firmly seated therein in the outer end Patented J an. 4, 1910.. Application filed April 19, 1907. Serial No' 369,147.` f

or head of which is set the diamond c2, or

dressing tool, used for dressing the face of adapted to engage with the worm gear-wheel c on the shaft C2.

In operation, it being desired to grind the face of the grinding wheel W concave, or of the form shown most plainly in Figs. 1 and 5, in order to adapt it to grind the faces of pulleys P, of such form as shown in Fig. 5, the frame C will be tilted as shown in Fig. l so that the diamonding tool in being traversed across the face of the wheel will trayel at an angle such as is indicated by the dotted line 3 3 in Fig. 1', or -m in Fig. 6, and across the line of the aXis of the wheel, which, as will be readily understood and as clearly7 illustrated in Fig. 6, will produce a true curve in the face of said wheel which curve may be increased or diminished as desired by varying the angle of the frame C which can be done reatlily by loosening the clamping screw b and turning the sleeve C3 to secure the desired angle and again securing it. IlVhen it is desired to grind a square loo the crank L turns the crank-shaft Bwhich, through the gear connection above described, operates to slide the carriage on block C3 in the way in bar C. YVhen said carriage has been traversed to bring the diamond c2 to one edge of the Wheel W the motion of crank b is reversed and said carriage is traversed to bring said diamond to the other edge of the Wheel. Said wheel is fed to the tool by the mechanism employed for feeding it to the Work, such as is common in my type of grinding machines and shown in many of my former patents.

Having thus fully described my said invention, what I claini as new and desire to secure by Letters Patent is:

l. A diamondingA tool for grinding machines comprising a stand adapted to be se cured upon the grinding machine table, a frame mounted to tilt transversely on said stand, a traversing carriage mounted on said frame, and the dressing tool mounted on said carriage, substantially as set forth.

f2. In a dianionding tool for grinding machines, the combination, of the stand adapted to be secured on the table of the grinding machine bed, a transversely extending frame mounted on a sleeve adjustably secured on said stand and having a transverse Way formed therein, said sleeve, a traversing carriage mounted in said way, means for trav- `irsing said carriage back and forth, and a part carrying the diamond suitably mounted on said carriage, substantially as set forth.

3. In a diamonding tool, the combination,

of the stand, the tilting frame mounted on said stand and provided With a transverse way, a traversing carriage mounted in said Way in said frame, a rack-bar secured in said carriage, a shaft having a pinion on its fereas,

Ward end engaging said rack-bar and mounted in a bearing extending through thc top of said frame. said bearing, a gear ou the rear end of said shaft, and a crank-shaft mounted' carriage carrying the dressing tool mounted in said frame, means for traversing said carriage, and means for adjusting the angle of the frame, substantially as set forth.

A diamonding tool for dressing the faces of grinding wheels comprising a traversing carriage carrying the dressing tool arranged to traverse in a diagonal direction across the face of the Wheel While in rotation, and means for traversing said carriage, substantially as set forth.

G. A diamonding tool for grinding-ma chines comprising a support, a carriage bearing the dressing tool, said dressing tool mounted on said support to traverse across the face of the grinding Wheel, means for traversing said carriage and means for regulating the angle of the traversing movement, substantially as set forth.

In Witness whereof, I have hereunto set my hand and seal at Waynesboro, Pa., this 13th day of April, A. I). nineteen hundred and seven.

ABRAHAM B. LL'XNDIS. [n s] `Witnesses :V

SHERMAN A. MILLER. Grenen II. Diener..

with the center of' said Work, the traversing 

